Re: Whats wrong with 'sets in grep'

[Matthew Woehlke]

SPS Khokhar wrote:
> Kindly someone explain to me, what is wrong with 'sets in grep'
>
> following are two commands logically seems same but results are like
> north-south pole, not same.
>
> what i want is - All files/dir having names in uppercases only
>
> ------------------------------------------------
> [simrat > simrat]$ ls | grep ^[A-Z]*$
> crbt
> Desktop
> evolution
> ice
> just
> Linux
> misc
> MYSHARE
> scripting
> send
> test
> zBochs
>
> [simrat > simrat]$ ls | grep ^[ABCDEFGHIJKLMNOPQRSTUVWXYZ]*$
> MYSHARE
> ----------------------------------------------------

You mean, aside from that you should be using '[:upper:]'? Did you read 
the man page? Particularly the part about locale, and how "many locales 
sort characters in dictionary order, and in these locales ([A-D]) is 
typically not equivalent to ([ABCD]); it might be equivalent to 
([AbBcDdD]), for example" (quote edited to match the behavior you seem 
to be seeing)? And how "you can use the C locale by setting the LC_ALL 
environment variable to the value C"?

--
Matthew
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